The story
From snow + bike. * snow + bike (“motorcycle”) From being something akin to a two-wheeled motorcycle adapted for snow * snow + bike (“bicycle”) From being something akin to a bicycle adapted to snow
Etymology from Wiktionary, CC BY-SA 4.0.
snow bike
Today it means: A mini-snowmobile built out of the frame of a motocross motorcycle (dirtbike), replacing the rear drive wheel with a long trailing caterpillar track and the front wheel with a single ski. Full definition →